Problèmes avec Cartes Mémoires Linguistiques

Problèmes avec Cartes Mémoires Linguistiquesmes cartes mémoires de langues/linguistiques

A possessive or a determiner is missing here No need for capitalization here, "carte mémoire" is a common noun

Je veux le rattraper, mais néanmoins il faudradufaudra du temps.

"rattraper" always has a complement => LE rattraper (= rattraper le retard) You already have "néanmoins", so "mais" is redundant

Pourtant, vaut ça en vaudra la peine.

Unlike in Spanish, using subject pronouns is compulsory in French (except for imperatives and other things, of course) => ça It's worth it = ça EN vaut la peine (en = DE rattraper mon retard) The original sentence featured a future tense, so I've used one here as well

J'ai déjà fait des progrès, donc simplement je dois donc simplement être persistanteassidue dans mon apprentissage/persévérante !

"persistant" is said about things that last in time, that are continuous "persévérant" is said about humans or at least conscious beings, and it means having the will to try again and again Given the context, I'd rather say "régulière/assidue dans mon apprentissage" though